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SOPRA™ 4897

SOPRA™ 4897

SOPRA 4897 is an SBS-modified bitumen venting base sheet for use in approved multiply membrane and flashing assemblies. SOPRA 4897 is composed of a proprietary formulation of elastomeric styrene-butadiene-styrene (SBS) polymer modified bitumen and is reinforced with a high quality random glass fiber mat. The topside is surfaced with fine mineral aggregate while the underside is surfaced with mineral granules to facilitate venting characteristics.

Product Properties

  • Component Base
  • Installation Method Mechanically Attached
  • Reinforcement Glass Fiber
  • Thickness 120 mils (3.1 mm)
  • Topside Sanded
  • Underside Sanded

Installation

Prior to installation, unroll SOPRA 4897 onto the roof surface and allow to relax. Position SOPRA 4897 in desired position and fasten to nailable substrate. Subsequent approved inter-ply or cap ply membranes are applied to SOPRA 4897 via cold adhesive or heat welding. Refer to the SOPREMA SBS Roofing Guide for additional application guidelines.

 

Testing & Approvals

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Related Projects

Cleveland Museum of Art – Cleveland, Ohio

This $350 million project was the largest cultural project in Ohio’s history. SOPREMA’s SOPRALENE® Flam 180 polymer modified bitumen two-ply system was installed. SOPREMA was the ideal manufacturer for the project as they were able to provide a variety of quality products to accommodate the projects’
needs with a single source warranty.

Museum of Science and Industry – Chicago, Illinois

Cleveland Clinic’s main campus consists of 41 buildings on about 140 acres near University Circle, Cleveland. They operate 14 family health and ambulatory surgery centers in surrounding communities and a multispecialty hospital and family health center in Weston, Florida. Various SOPREMA® systems have been chosen for their waterproofing needs.